CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	Total		Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings (Deficit)	Retained Earnings (Deficit) Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2021				3,122
Beginning balance at Dec. 31, 2021	$ 51,867		$ (1,827)	$ 936	$ 453,247	$ (5,651)	$ (375,584)	$ 3,824	$ (26,732)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(32,462)	[1]					(32,462)
Net settlement of vested stock awards	2				2
Issuance of common stock (in shares)				1,190
Issuance of common stock	9,768			$ 357	9,411
Foreign currency translation adjustment, net of tax	346								346
Non-cash compensation	(624)				(624)
Ending balance (in shares) at Mar. 31, 2022				4,312
Ending balance at Mar. 31, 2022	$ 27,070			$ 1,293	456,385		(404,222)		(26,386)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting pronouncement adjustment	Accounting Standards Update 2020-06 [Member]
Beginning balance (in shares) at Dec. 31, 2022				4,343
Beginning balance at Dec. 31, 2022	$ 117,760			$ 1,303	457,133		(301,679)		(38,997)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(24,711)						(24,711)
Net settlement of vested stock awards (in shares)				14
Net settlement of vested stock awards	(48)			$ 4	(52)
Foreign currency translation adjustment, net of tax	755								755
Non-cash compensation	382				382
Ending balance (in shares) at Mar. 31, 2023				4,357
Ending balance at Mar. 31, 2023	$ 94,138			$ 1,307	$ 457,463		$ (326,390)		$ (38,242)

[1] Condensed consolidated statements of cash flows for the three months ended March 31, 2022 includes discontinued operations.